<template>
  <a-layout>
    <a-layout-content
        :style="{ background: '#fff', padding: '24px', margin: 0, minHeight: '280px' }"
    >
      <p>
        <a-form
            layout="inline"
            :model="param"
        >
          <a-form-item>
            <a-input v-model:value="param.name" placeholder="请输入查询关键字">
            </a-input>
          </a-form-item>
          <a-form-item>
            <a-button
                type="primary"
                @click = "handleQuery({page: 1,size:pagination.pageSize})"
            >
              查询
            </a-button>
          </a-form-item>
          <a-button type="primary" @click="add()" size="large">
            新增
          </a-button>
        </a-form>
      </p>
      <a-table
          :columns="columns"
          :row-key="record => record.id"
          :data-source="ebooks"
          :pagination="pagination"
          :loading="loading"
          @change="handleTableChange"
      >
        <template #cover="{ text: cover }">
          <a-avatar :src="cover" shape="square" :size="50"/>
          <!--          <img v-if="cover" :src="cover" alt="avatar"/>-->
        </template>
        <template v-slot:category="{ text,record }">
          <span>{{getCategoryName(record.category1Id)}} / {{getCategoryName(record.category2Id)}}</span>
        </template>
        <template v-slot:action="{test,record}">
          <a-space size="small">
            <router-link :to="'/admin/doc?ebookId=' +record.id">
              <a-button type="primary">
                文档管理
              </a-button>
            </router-link>
            <a-button type="primary" @click="edit(record)">
              编辑
            </a-button>
            <a-popconfirm
                title="删除后不可恢复,确认删除?"
                ok-text="是"
                cancel-text="否"
                @confirm="handleDelete(record.id)"
                @cancel="cancel"
            >
              <a-button type="danger" >
                删除
              </a-button>
            </a-popconfirm>
          </a-space>
        </template>
      </a-table>
    </a-layout-content>
  </a-layout>
  <a-modal
      title="电子书表单"
      v-model:visible="modalVisible"
      :confirm-loading="modalLoading"
      @ok="handleModalOk"
  >
    <a-form :model="ebook" :label-col="{ span: 6 }" :wrapper-col="{ span: 18 }">
      <a-form-item label="封面">
        <!--做成文件上传-->
        <a-input v-model:value="ebook.cover"/>
      </a-form-item>
      <a-form-item label="名称">
        <a-input v-model:value="ebook.name"/>
      </a-form-item>
      <a-form-item label="分类">
        <a-cascader
            v-model:value="categoryIds"
            :field-names="{ label: 'name', value: 'id', children: 'children' }"
            :options="level1"
        />
      </a-form-item>
      <a-form-item label="描述">
        <a-input v-model:value="ebook.description" type="textarea"/>
      </a-form-item>
    </a-form>
  </a-modal>
</template>

<script lang="ts">
import {defineComponent, onMounted, ref} from 'vue';
import axios from 'axios';
import { message } from 'ant-design-vue';
import { Tool } from '@/util/tool';

export default defineComponent({
  name: 'AdminEbook',
  setup() {
    const param = ref();
    param.value = {};//不加空对象会报错
    const ebooks = ref();//ref绑定响应式数据
    const pagination = ref({
      current: 1,
      pageSize: 5,
      total: 0
    });
    const loading = ref(false);

    const columns = [
      {
        title: '封面',
        dataIndex: 'cover',
        slots: {customRender: 'cover'}
      },
      {
        title: '名称',
        dataIndex: 'name'
      },
      {
        title: '分类',
        slots: {customRender: 'category'}
      },
      {
        title: '文档数',
        dataIndex: 'docCount'
      },
      {
        title: '阅读数',
        dataIndex: 'viewCount'
      },
      {
        title: '点赞数',
        dataIndex: 'voteCount'
      },
      {
        title: 'Action',
        slots: {customRender: 'action'}
      }
    ];
    /**
     * 数据查询
     **/
    const handleQuery = (params: any) => {
      loading.value = true;
      // 如果不清空现有数据，则编辑保存重新加载数据后，再点编辑，则列表显示的还是编辑前的数据
      // ebooks.value = [];
      axios.get("/ebook/list", {
        params: {
          page: params.page,
          size: params.size,
          name: param.value.name
        }
      }).then((response) => {
        loading.value = false;
        const data = response.data;
        if (data.success) {
          ebooks.value = data.content.list;

          // 重置分页按钮
          pagination.value.current = params.page;
          pagination.value.total = data.content.total;
        }else {
          message.error(data.message);
        }
      });
    };
    /**
     * 表格点击页码时触发
     */
    const handleTableChange = (pagination: any) => {
      console.log("看看自带的分页参数都有啥：" + pagination.current + pagination.pageSize);
      handleQuery({
        page: pagination.current,
        size: pagination.pageSize
      });
    };

    //-----------表单----------
    /**
     * 数组:[100,101]对应;前端开发/Vue
     */
    const categoryIds = ref();
    const ebook = ref();
    const modalVisible = ref(false);
    const modalLoading = ref(false);
    const handleModalOk = () => {
      modalLoading.value = true;
      ebook.value.category1Id = categoryIds.value[0];
      ebook.value.category2Id = categoryIds.value[1];
      axios.post("/ebook/save", ebook.value).then((response) => {
        modalLoading.value = false;
        const data = response.data;
        if (data.success) {
          modalVisible.value = false;
          //重新查询列表
          handleQuery({
            page: pagination.value.current,
            size: pagination.value.pageSize
          });
        }else {
          message.error(data.message);
        }
      });
    };
    /**
     * 编辑
     */
    const edit = (record: any) => {
      modalVisible.value = true;
      ebook.value = Tool.copy(record);
      categoryIds.value = [ebook.value.category1Id, ebook.value.category2Id]
    };
    /**
     * 新增
     */
    const add = () => {
      modalVisible.value = true;
      ebook.value = {};
    };
    /**
     * 删除
     */
    const handleDelete = (id: number) => {
      axios.delete("/ebook/delete/"+id).then((response) => {
        const data = response.data;
        if (data.success){
          //重新查询列表
          handleQuery({
            page: pagination.value.current,
            size: pagination.value.pageSize
          });
        }
      });
    };

    const level1 = ref(); // 一级分类树，children属性就是二级分类
    let categorys: any;
    /**
     * 查询所有分类
     **/
    const handleQueryCategory = () => {
      loading.value = true;
      // 如果不清空现有数据，则编辑保存重新加载数据后，再点编辑，则列表显示的还是编辑前的数据
      // categorys.value = [];
      axios.get("/category/all").then((response) => {
        loading.value = false;
        const data = response.data;
        if (data.success) {
          categorys = data.content;
          console.log("原始数组：", categorys);

          level1.value = [];
          level1.value = Tool.array2Tree(categorys, 0);
          console.log("树形结构：", level1.value);
          //加载完分类后加载电子书,否则电子书会渲染报错
          handleQuery({
            page: 1,
            size: pagination.value.pageSize
          });
        }else {
          message.error(data.message);
        }
      });
    };

    const getCategoryName = (cid: number)=>{
      let result = "";
      categorys.forEach((item: any)=>{
        if (item.id === cid){
          result = item.name;
        }
      });
      return result;
    };

    onMounted(() => {
      handleQueryCategory();
    });

    return {
      param,
      ebooks,
      pagination,
      columns,
      loading,
      handleTableChange,
      handleQuery,
      getCategoryName,

      edit,
      add,

      ebook,
      modalVisible,
      modalLoading,
      handleModalOk,
      categoryIds,
      level1,

      handleDelete,

    }
  }
});
</script>